Syringe



C. V. SMITH SYRINGE Filed Sept 19, 1946 li lVENTOR I, g z

3 ../H m J Patented Oct. 4, 1949 UNITED. sures T oFeFi-cs My presentinvention relates :to the improvementsin syringes. 1

Heretofore is-yringes have comprised .ai. rigid tube havinga nozzl attheend and supplied with liquid by means of a bulb or by gravity from asupply container.

The rigidity of the tube and the fact that the liquid or solution wassupplied at one point, namely the :end, imposed certain limitations anddisadvantages on syringes of this prior type or construction. Alsosyringes of this prior con- 'struction were generally bulky and in somecases awkward to pack in a small space, as is desirable for traveling.

My present invention provides -a syringe which ma be convenientlycollapsed or confined to a small size or space, and has a stem ofgreater flexibility from which the liquid or solution may be ejected atspaced intervals throughout the length of the stem. It is also of simpleand inexpensive construction.

The various features of my invention are illustrated, by way of example,in the accompanying drawings in which Fig. 1 is a side view and Fig. 2an end view of a bulb type of syringe embodying my invention;

Fig. 3 is a longitudinal section of the syringe shown in Fig. 1;

Fig. 4 is a sectional view, on a smaller scale, of the syringe shown inFig. 2 having a stem pushed into the bulb for shipping or traveling;

Fig. 5 is a cross-section, on a larger scale, of tubing used in theconstruction of the syringe;

Fig. 6 is a side view of a syringe of the fountain type embodying myinvention;

Fig. '7 is a sectional view of the container of the fountain syringe ofFig. 6.

In my present invention I provide a stem in the form of a loop offlexible rubber tubing having openings spaced throughout the length ofthe tube. The tube may be of the non-kinking type and bent in the formof a loop and has sufiicient rigidity to enable it to be placed innarrow passages for use but retaining suificient flexibility andresiliency to bend readily. With this construction there is less dangerof injury to sensitive or delicate tissues or membranes. The flexibilityof the loop also enables it to be compressed into a narrow dimension andto spring apart and dilate the tissues.

The ends of the loop extend through a shield or plug, preferably havinga pair of passages to receive the ends separately. The ends of the loopprojecting through the plug are open to communicate with the interior ofthe bulb or supply 2 Claims. (01. 128432) container in a fountain typeof syringe. The loop may be pulled entirely from the plug or may bepushed into the bulb entirely to seal the bulb thus reduce the spaceoccupied by the-syringe. In this way a bulb syringemay becarried with afull supply of liquid or medicament.

In the connnon type of syringe the :usual type of bag and supply maybe-employed, but my invention provides an improved typeo'f supp'l-ycontainer of flexible material, such as rubber, -which maybe collapsedto a flat circular form inw-hich the tube may be coiled.

Referring more particularly to 'Figs. 1 to 4 of the drawings, theinvention is illustrated as applied to a bulb type of syringe comprisinga bulb ill, of the usual type, in-the open end of which is inserted aplug or shield l l and in which in turn is mounted the ends of a loop offlexible rubber tubing i2 forming the stem or nozzle of the presentinvention. The tube I 2 may be a cylindrical tube and may have areinforcement, which is shown at l3, Fig. 5, to make the tubenon-kinking.

The tube is also provided at spaced intervals with openings l4 throughwhich solution or fluid may be ejected.

The loop formed by the tube may be a flat loop or may be given a lighttwist, as shown in Fig. 2. Owing to the loop-shape and aided by theridge l3, if a non-kinking tube is employed, the stem or nozzle thusformed has sufficient stiiT- ness or rigidity to enable it to beinserted easily into a passage for use, and inasmuch as it may becompressed to narrow the width of the loop it will accommodate itself tovarious conditions of use.

When water or other liquid is forced from the bulb II] it is ejectedfrom the openings l4 throughout substantially the length of the stem,thus bathing all parts with the solution or liquid.

As shown in Fig. 3 the plug or shield II has a central opening l5 and apair of spaced openings l6 and I! communicating therewith through whichthe ends of the loop l2 may be inserted. The open ends of the loop thenpass through the large opening or passage I5 extending through a stem 18of the plug into the interior of the bulb l 0 so that there is a freecommunication from the bulb to the loop.

The tubing of the loop fits sufficiently tightly in the passages 16 andIT to be liquid-tight, but owing to the flexible nature of the tube itmay be pulled out to disassemble it or for cleaning or replacement.

The tube may also be pushed entirely into the bulb, as shown in Fig. 4,in which case it forms a tight closure inasmuch as the openings M willbe within the plug II or in the bulb itself. The bulb may, therefore, befilled with the treating fluid, and when the loop is pushed into theplug to form a closed seal the syringe may be carried filled withoutdanger of leakage. For use it is only necessary to pull the loop to theposition shown in Figs. 1 and 3.

In the embodiment of the invention shown in Figs. 6 and 7, the inventionis illustrated as applied to a fountain type of syringe comprising asupply container or bag 19 having a loop or opening 20 at its upper endfor mounting on a hook,

and having an outlet nipple 2| at its lower end over which the upper endof a supply tube 22 may be mounted.

In the lower end of the tube 22 is inserted a plug 23, similar inconstruction to the plug II, for mounting a loop 24. The loop 24 andplug 23 may be of a construction similar or identical With the loop l2.

The supply container or bag l9 may be of any suitable type butpreferably a collapsible type which may be collapsed to a circular formas shown in Fig. 7.

For this purpose the bag is made with a number of ridges 25, 26, 21,which preferably are of decreasing diameters, and a lower cup portion 28from which the nipple 2| extends. When not in use the tube 22 may bedetached and the bag collapsed to the form shown in Fig. 7. The tube 22may then be coiled within the bag, forming a very compact package forshipping.

The tube 22 may be of the non-collapsing type as shown in Fig. 5, itbeing necessary only to cut back the ridge I3 to enable it to beinserted over the nipple 2| or neck or extension of the plug 23.

The plug II and other parts of the apparatus may be formed of plastic orrubber.

Through the above invention I have provided a syringe of simpleconstruction which may be packed in a small space for traveling and onewhich has greater flexibility than syringes heretofore used. Also itprovides that the liquid may be distributed throughout the length of thestem of the syringe.

What I claim is:

1. A syringe which comprises a plug for attachment to a supply fluid andhaving a pair of openings therethrough said plug being otherwise closedand a stem comprising a loop of openended perforated tubing extendingthrough and filling the openings of said plug.

2. A syringe which comprises a flexible bulb, a plug mounted in saidbulb, said plug having a pair of openings therethrough said plug beingotherwise closed and a stem comprising a loop of open-ended perforatedtubing extending through and filling the openings of said plug.

' CHARLES VICTOR SMITH.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date ,070,787 Eggers Aug. 19, 19131,279,154 Pilling et al Sept. 17, 1918 1,901,069 Williams Mar. 14, 19331,928,992 Clark et a1. Oct. 3, 1933 2,253,571 Miller Aug. 26, 1941

